Fire-pot.



C. F. CODA.

FIRE POT.

APPLIUAT ION FILED JULY 10, 1911.

' Patented Mar. 24, 1914.

2 SHBETQ-SHEET l.

wung adys.

COLUMBIA PLANOGRAPH CO.,WASHINOTON, u. c-.

C. F. CODA.

FIRE POT.

APPLICATION FILED JULY 10, 1911. I 1,091 ,1 95. Patented Mar. 24, 1914.

2 SHEETS-SHEET Z.

Clays,

UNITED STATES PATENT OFFICE.

CHRISTOPHER F. CODA, OF DETROIT, MICHIGAN, ASSIGNOR TO THE ART STOVE COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF MICHIGAN.

FIRE-POT.

Specification of Letters Patent.

Applicat'i'on filed July 10, 1911.

Patented Mar. 24, 1914. Serial No. 637,748.

The invention relates to fire-pots of that.

type in which channels are provided in the sides of the pot designed for the admission of heated air to produce smokeless combustion.

It is the object of the present invention to overcome certain defects enhancing any constructions heretofore used, and further to obtain a simple and inexpensive construction for manufacture as more fully hereinafter set forth.

In the drawings,Figure 1 is a vertical central section through the fire-pot; Fig. 2 is a perspective view of a portion of the pot; Fig. 3 is a perspective view of the slotted ring section.

To secure smokeless combustion of fuels containing a high percentage of volatile matter, it is essential to commingle the distilled gases with a proper proportion of air and also to heat the gases or mixture of gases and air to a temperature at which combustion may be sustained. It is not however,

desirable to pass the air through the uncoked fuel as this has a tendency to form too rich a mixture to burn without smoke. I have therefore, devised a construction of fire-pot in which the air for sustaining combustion of the distilled gases is admitted to the fuel only a short distance beneath the top of the pot and pre-heated. This is preferably accomplished by forming the pot with an inner ring section in the upper portion thereof spaced from the body of the pot to form an intermediate air channel and also slotted for the passage of air from said channel into the fuel.

More in detail, A is the fire-pot section mounted on a suitable base B and provided with any suitable construction of grate (not shown). The pot is of the usual downwardly tapering form but in its upper portion is bulged outward as indicated at G. This enlargement provides space for an inner ring section D as well as an intermediate air channel E between said ring and the outer wall. The ring D is supported in position by a series of lugs F thereon engaging corresponding bearings G on the main section of the firepot, and to hold these lugs and bearings in registration an interlocking lug and recess is formed at one point as i11- dicated at H.

is an outwardly extending annular flangeat the upper end of the portion C, and J is a cover ring engaging the flange I and extending to the upper end of the ring D. Thus the flange I, ring J and ring D together form an upper annular air channel J which is in communication with the intermediate air channel E between the ring D and wall C.

For admission of air into the intermediate annular air channel, a chamber K is formed in front of the pot and is provided with an opening controlled by a damper L. This chamber K has its inner wall formed by the firepo-t which will thus heat the air when first admitted to said chamber, While the upper end of the chamber is in communication with the upper annular air channel formed beneath the cover ring J. To prevent the air from directly passing into the intermediate air channel between the ring D and portion C at the front of the fire-pot a shield M is arranged at this point which defleets the air, directing it into the upper annular channel. The ring D is preferably formed with slots N in its lower portion which divide it into a series of downwardly projecting fingers and which form the admission passages for the air in the intermediate channel E to the combustion zone of the fire-pot.

WVith the construction as described in use, when the fire is fully started within the fire pot, the ring D will be heated to a comparatively high temperature by contact with the adjacent incandescent fuel. By then adjust ing the damper L the proper quantity of air for sustaining smokeless combustion of the distilled gases is admitted through the chamber K and then through the upper annular air channel beneath the cover ring J to the intermediate annular chamber E between the section C and ring D. Here the air which ha been pro-heated by passing through the chamber K is raised to a still higher temperature and is then admitted through the slots N into the burning fuel.

These slots N being located comparatively near the top of the fire-pot, will commingle the air with the distilled gases without passing it through the main body of the fuel and will thus avoid the too rapid distillation. The construction is also one which is inexpensive to manufacture, avoiding core work and forming the complete fire pot with an air chamber and channels therein with comparatively few parts. 7

What I claim as my invention is:

A fire-pot, comprising a downwardly tapering main section having an annular enlargement at its upper end, an air inlet chamber formed externally of said main section, an annular section supported upon said main section and depending within said Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C. 

